Gustav keebs



(No Model.) 2 Sheets-Sheet 1.

G. KREBS & A. WEIL. ROOFING TILE.

No. 558,395. Patent ed Apr. 14, 18-96.

(No Model.) 2 Sheets-Sheet 2.

G. KREBS & A. WEIL. ROOFING TILE.

No. 558,395. Patented Apr. 14, 1896.

ANDREW IGHMMM. PNOTUUI'IIQWASMINGTDN. I! (IV UNITED STATES PATENT OFFICE.

GUSTAV KREBS, OF HALLE-ON-THE-SAALE, AND ABRAHAM VEIL, OF STEINHEIM, GERMANY.

ROOFING -T|LE.

SPECIFICATION forming part of Letters Patent No. 558,395, dated April 14, 1896.

Application filed March 22,1895.

.To all whom, it may concern:

Be it known that we, GUSTAV KREBS, fabricant, a resident of Halle, and ABRAHAM \VEIL, merchant,a resident of Steinheim,in the Kin gdom of Prussia and Empire of Germany, subjects of the King of Prussia, have invented certain new and useful Improvements in Roofing-Tiles, of which the following is a specification.

Our invention relates to com ent roofing-tiles of any desired shape, the lower overlapping ledges of which are each furnished with notches or recesses, and the upper overlapping ledges of which are each formed with tongues or'teeth,so that amutual mortise-andtenon joint is formed. These cement roofing tiles offer the great advantage that when a number of the tiles are placed in position and connected together to form a single layer it is impossible to separate a single tile unless a start is made by commencing to unroof at the place where the roof was finished. Moreover, this new tile affords a perfectly tight covering on the one hand by the tenon-and-mortise joint and on the other hand by the application of packing to the joints, which consists of a slit and peculiarly-angled,plate of sheet metal, which is inserted in the course of manufacture in the tile when it is soft, the piece of sheet metal providing two strips for packin g, which can be bent as required.

To enable our invention to be fully understood, we will proceed to describe it with reference to the accompanying drawings, in which Figure 1 is a plan view of the under side of one of our improved rhomboidal-shaped cement roofing-tiles. Fig. 2 is a plan view of the upper side of the same. Fig. 3 is a section on the line a b of Fig. 1. Fig. 4 is a front edge view of the tile shown in Fig. 2. Fig. 5 is a plan view and a front view of the packing-plate. Fig. 6 is a detail perspective View of a part of a tile provided with a packing-plate. Fig. 7

is a detail perspective view of a part of a tile, showing a modification. Fig. 8 is a plan view of the upper side of that shown in Fig. 7. Fig. 9 is a top view of a portion of a roof provided with a layer of our improved tiles. Fig. 10 shows a plan view of a tile of modified form simulating the tail of a beaver.

Serial No. 542,849. (No model.)

1 is a cement roofing-tile which has at the upper edges of its fiat upper surface two ledges 2 and 3, having on their inner sides trapezoidal indentations 4, providing similarly-formed interlocking teeth or tongues 4. The lower edges of the flat lower surface are similarly provided with ledges 5 and 6, which engage over the ledges of the upper surface and are furnished with notches or recesses 7, extending toward their inner sides to receive the in-- terlockin g teeth or tongues.

In Figs. 7 and 8 we show a modification in the form of the ledges 2, 3, 5, and 6,which may be of plane tongue I) and groove a shape. Ve also show rounded front upper edges 0. On the fiat lower surfaces of the tiles are ribs 8, which impart to the tile increased strength and resistance. For the purpose of suspending the tiles from the roof-lath 01 they are furnished with noses or lugs 9 in the usual manher. The right-hand blunt corner of the tile is furnished with a joint packing-plate, (shown in Fig. 5,) the construction of which plate will now be described.

A piece 10 of sheet metal is cut to the extent of about one-half into two strips 11 and 12, and of these strips the strip 11 is cut shorter than the strip 12. Furthermore, the shorter strip 11, as also the end 13 of the piece 10, itself are bent at an angle so that half the j ointpackingthat is to say, as far as m in Fig. 5 has the form of the letter U. This j oint-packing has its portion 13 pressed into the righthand blunt corner of the tile in the course of the manufacture of the latter, so that the bent strip bounds the blunt corner,while the longer slip 12 projects free.-

The mode of employment and action of the new tile may be explained as follows: The tiles are suspended by their lugs or noses from the roof-lath d in the usual manner and the strips 11 of the tiles curved downward somewhat, as shown in Figs. 1, 6, 7, and 8. Upon the second tile being placed in position, the joint formed by the two blunt corners of the tiles is closed by the projecting portion 11, which acts as a spring,while the portion of the joint which is formed by the ledges 5 and 6 is made tight by the somewhat curved portion 12 and the upper part of the j oint-packin g plate.

Having thus described our invention, the

following is what we claim as new therein and formed with two strips 11. and 12, and a bent IO desire to secure by Letters Patent: end 13; substantially as described.

1. A roofing-tile comprising upper and lower In witness whereof we have hereunto set our fiat surfaces, the upper ledges on the upper hands in presence of two witnesses. 5 surface formed with indentations and teeth, GUSTAV KREBS.

and the lower ledges on the lower surface ABRAHAM XVEIL. formed with recesses for the teeth; substan- WVitnesses:

tially as described. PAUL FRANK,

2. A roofing-tile comprising a packing-plate ADOLF HERZOG. 

